Apparatus for cleaning metal parts



Aprilj d 19', .1927.

L. ROSENBERG APPARATUS FOR CLEANING METAL PARTS Filed May 14. 1926 2Sheets-Sheet 1 Zjwwm rm, LOU/id mefier fieraffozneq 1,624,982 P" 1927'1;. ROSENBERG APPARATUS FOR CLEANING METAL PARTSv Filed May 14. 1926 2Sheets-Sheet 2 v 1212 I i /rr E P gwvento'c latented Apr. 19 1927.

-- UNITED STATES LOUIS ROSENBERG, OF MILWAUKEE, WISCONSIN.

-;A'.PPARA.TUS li'OIt CLEANING METAL PARTS.

Application filed m 14,

The object of my invention is to rovide .an improved apparatus for usein c caning p metal parts by means of a cleaning solution; to provide anapparatus of this type in which the heater is positioned within thecleaning tank; to provide a cleaning tank of novel shape whereby. toproduce the desired circular motion of the cleaning fluidadvantageously; to provide the novel combination and arrangement ofparts disclosed in the accompanying drawings and hereinafter described.I attain these and other objects of my invention by the apparatus shownin the drawings, in which Figure 1 is a side elevation of my inventionwith aportion of the side wall of the tank broken away;

Fig. 2 is a top plan view; Fig. 3 is an end elevation; Fig. 4 is a view,partly in side elevation and partly in section of the heater; and

Fig. '5 is a detail sectional view showing the connection between theheater element and the washingtank.

Like numerals indicate like parts in each of the several views.

Referring to the accompanying drawings, I provide a tank 1 having anelevated floor 2, a sloping floor 3 and a lower lowered hen 4.; In theend of the tank having the.

lowered floor I provide-a heater or firebox 8 supported in spacedrelation to the floor 4 by legs 9, thus providing a space 26 under theheater and also having a space 27 intervening between the heater 8 .andthe adjacent end of the tank. Positioned over the heater 8 is a lid 5which is removably mounted on thetank but which is not hinged as it'is'not fre uently lifted. I provide a middle lid 6 w ich. is hinged to thetank and which has a handle 36 and-I also provide an outer lid '7 alsohinged to the tank and .which has a-handle 37. Thislid is mountedover'that portion ofthe tank having the elevated floor 2. Affixed to lid7' is a stri which overlaps the adjacent edge of id 6 so that when lid 6is raised it will also raise lid 7, but lid 7 may be raised withoutraising lid 6.

Heater 8 is provided witha suitable lid 10 which has ahandle 28 forlifting the entire heater out of the tank when necessary for cleaning,As shown in Fig.4, I provide a bafiie plate 11 descending part way,under lid 10 and in spaced relation thereto to provide the chamber 12leading 1926. Serial N0.- 109,201.

to the smoke stack 17 at one end and to the assage 13 at the other endwhich communicates with the chamber or passage extending between baflieplate 11 and a second bafile plate 14 which is mounted on the oppositeend of the heater as illustrated, and which communicates with theinterior 16 of the heater. I provide a plurality of pipes 19 extendingthrough the upper portion of heater 8 to permit of the circulation ofthecontents of the tank therethrough, to

facilitate heatin same.

Referrin ig. 1, I' provide a valvecontrolled lnlet pipe 18 opening intotank 1 at the endin proximity to the heater. At the opposite end ofthetank I provide a valve-controlled pipe 21 for injecting steam orcompressed air from a suitable source to agitate the contents of thetank. I also provide a suitable thermostat 20, indicateddiagrammatically in Fig. 1. I prov 1de op ositely arranged lugs 22 onopposite sides 0 the tank on the inner walls thereof which may functioneither as a means for supporting bars from which articles to be immersedin the solution in the tank are suspended; or from which the articlesthemselves may be directly suspended.

I provide a suitable skimmer plate 23 arranged near the upper portion ofthe tank at the end havin directly below an charge pipe 24, as indicatedin Fig. 1. I provide opposite valve-controlled drain pipes 25 .openinout'of the bottom of the tank the elevated floor and opposite the greasedis-- immediately above, or in a line with, the lowered floor 4, asshown in Fig. 1.

Referring to Fig. 5, I providea flange 29 0 11 tank 1 -which engageswith angle iron support 34, which support is secured by bolt.

32 to the angle iron support 33 which supportsthe flange or extension 30of the heater 8. I provide suitable asbestos packings 31 between angleiron supports 33 and 34.

In operation the tank is filled with water through the valve-controlledpipe 18 and the desired chemicals and the metal parts to be cleaned areplaced in the tank supported from lugs 22. The chemical cleaningsolution is circulated in the direction indicated by the arrows in Fig.1 there being a clear ance entirely around the heater so that thesolution may flow through passage 26 under the bottom of the heater, u27 between the" heater and the. a jaeent end the space;

of the tank and back .over the top of the I heater to the other end ofthe tank and down toward the elevated floor 2 and thence down thesloping floor 3 to the last floor 4 and back under the heater to followthe course just described. Additional surface for liquid contact withthe heater is provided by means of a plurality," preferably 8, tubes 19that pass through the heater.

The sloping floor 3 is important in maintaining circulation and aneventemperature in the solution this dip in the floor takes the liquid fromthe elevated portion of the floor 2 and sends it to the lowered floor-4, thus ensuring continuous circulation. Steam or compressed air may beinjected into the tank through the valve-controlled pipe 21.

Grease removed from the metal parts naturally rises to the top of thesolution and is caught by skimmer plate 23' and flows over through thegrease discharge pipe 24. Sediment may -fiow out through the oppositevalve-controlled drain pipes 25.- The temperature of the solution isregulated by the thermostat 20. Compressed air or steam may be forcedintothe tank through the valve-controlled pipe 21 for the purpose ofagitatin or'this line of pipe may be used as a Withdrawal line of theliquid cleaning solution to a suitable rotary or centrifugal pump.

' The bafiie plate in the heater retards the escape of the heat units tothe stack and prozides a more eficient utilization of the It is withinthe contemplation ,of my invention to provide'a fire-box or heater thatcan use either reclaimed waste, crankcase oil, fuel oil, distillates,gasolene, kerosene,

' artificial or natural gas, as the'fuel.

The pump may be used to deliver a spray or stream of the cleaningsolution against large metal parts that are too large to be suspended inthe solution in the tank.

It is also within the contemplation of my invention to utilize theapparatus for the cleaningof textiles as well as of metal parts, andalso for general boiling operations. The 8-inch slopingfloor with thetwo different floor levels has been; attained after considerableexperimentation and makes it possible to -maintain the entire volumeofthe solutionat a uniform heat.

WhatI claim is:

1. In a chemical solution tank for use in cleaning metal parts, thecombination of a tank having hinged lids," anelevated floor atone endofthe tank, a lowered floor at the other end of the tank, a sloping floorconnecting the elevatedgand lowered 'fioors of; the tank, a heatermounted in the tank on ,and in spaced relation to the lowered floor andto the adjacent 'end of the tank andvalye-controlled drain conduitsopening out iof the lowermost portion of the tank.

the contents of the tank,

2. In a chemical solution ta for use in cleaning metal parts, thecombnation of a tank having hinged lids, an elevated floor at one end ofthe tank, a lowered floor at the other end of the tank, a sloping floorconnecting the elevated and lowered floors of the tank, a heater mountedin the tank on r and in spaced relation to the lowered floor and to theadjacent end of the tank, valvecontrolled drain conduits opening out ofthe lowermost portion of the tank, and a valve-controlled conduit forthe admission of steam or compressed air into the tank at the endthereof adjacent the elevated floor. v

3.1m a chemical solution tank for use in cleaning metal parts, thecombination of a tank having hinged lids, an elevated floor at one endof the tank, a lowered floor at the other end of the tank, a slopingfloor connecting the elevated and lowered floors of the tank,fa heatermounted in the tank on and in spaced relation to the lowered floor andto the adjacent end of the tank, valve-controlled drain conduits openingout of the lowermost portion of the tank, a valve controlled conduit forthe admission of steam or compressed air into the tank at j the endthereof adjacent the elevated floor, the tank having aremovable lidarranged above the heater through which the stack floor and to theadjacent end of the tank,

valve-controlled drain conduits opening out of the lowermost portion ofthe tank, a valve-controlled conduit for the admisslon of steam orcompressed air into the tank 7 at the end thereof adjacent the elevatedfloor the tank having a removable lid arranged "above the heater throu hwhich the stack r from the heater exten s, and also having a pluralityof hinged lids extending over the remaining portion of the tank, one ofsaid hinged lids having a strip overlapping the other hinged lid wherebthe opening of one of thehinged lids wifi also operate the other, butnot vice versa. 1 a -5. In combination with the apparatus described iclaim 1, a grease trap and grease discharge conduit at one end of thetank and a valve-controlled" conduit at the opposite end of the tank foruse as a water inlet. a

r Louis ROSENBERG.

